Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual show entra às 21:00 quando Dot Above I entra às 20:00?
 ###Tabelas: CREATE TABLE league_and_cup_history (league_and_cup_history_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Level VARCHAR, Goals VARCHAR, Points INT, Domestic Cup VARCHAR) CREATE TABLE main_setlist (main_setlist_id AUTO_INCREMENT PRIMARY KEY, Year INT, Song VARCHAR, Artist VARCHAR, Genre VARCHAR, Band Tour Venue VARCHAR, Exportable? VARCHAR) CREATE TABLE sheffield_united_statistics (sheffield_united_statistics_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Division VARCHAR, League Apps INT, League Goals INT, FA Cup Apps INT, FA Cup Goals INT, Other Apps INT, Other Goals INT, Total Apps INT, Total Goals INT) CREATE TABLE schedule (schedule_id AUTO_INCREMENT PRIMARY KEY, WEEKDAYS VARCHAR, 5:55 VARCHAR, 10:00 VARCHAR, 15:00 VARCHAR, 16:00 VARCHAR, 17:30 VARCHAR, 18:00 VARCHAR, 19:15 VARCHAR, 19:26 VARCHAR, 20:00 VARCHAR, 20:30 VARCHAR, 21:00 VARCHAR, 21:30 VARCHAR, 22:00 VARCHAR, 23:00 VARCHAR) CREATE TABLE ap_poll (ap_poll_id AUTO_INCREMENT PRIMARY KEY, Week 2 Sept 7 VARCHAR, Week 3 Sept 14 VARCHAR, Week 4 Sept 21 VARCHAR, Week 5 Sept 28 VARCHAR, Week 6 Oct 5 VARCHAR, Week 7 Oct 12 VARCHAR, Week 10 Nov 2 VARCHAR, Week 12 Nov 16 VARCHAR, Week 14 Nov 30 VARCHAR, Week 15 Dec 7 VARCHAR, Week 16 (Final) Jan 9 VARCHAR)  
SELECT 21:00 FROM schedule WHERE 20:00 = dot above i